/Engine/Plugins/Animation/RigLogic/Source/RigLogicLib/Public/riglogic/riglogic/RigLogic.h
These is just a primitive array of floats, providing access to all the values of all transformations.
View over the array of values.
[ConstArrayView](API\Plugins\RigLogicLib\riglogic\types\ConstArrayView)< float > getRawNeutralJointValues() const